If your computer is identified correctly, and is considered a MacBook (13-inch Early 2008)
then the specifications should be as follows, according to http://mactracker.ca database.
And if your computer is actually considered a MacBook Pro, several important specs differ.
The following assumes your initial statement is correct, and the MacBook is not a /Pro.
Introduced February 2008
Discontinued October 2008
Model Identifier MacBook4,1
Model Number A1181
EMC 2242
Order Number MB402LL/A (White), MB403LL/A (White), MB404LL/A (Black)
White (2.1 or 2.4 GHz) or Black (2.4 GHz), durable polycarbonate
Built-in Memory None
Maximum Memory 6.0 GB (Actual) 4.0 GB (Apple)
Memory Slots 2 - 200-pin PC2-5300 (667MHz) DDR2 SO-DIMM
Minimum Speed --
Interleaving Support Yes
Upgrade Instructions:
• MacBook: How to remove or install memory - Apple Support
{Note Support instructions ^ do not take into account later testing
by qualified third-party reputable manufacturers of RAM, so total
memory upgrade specs are lower in older Support references}
• How to identify MacBook models - Apple Support
• How to identify MacBook Pro models - Apple Support
And Kingston computer RAM generally is not suited for use in several models of
Apple computer that run OS X. Better choices would be found among Crucial.com
or macsales.com vendor web sites. The correct specification is an important detail.
According to macsales.com (OWC) you need to be exacting on identification to be
able to get the correct specification parts for your MacBook4.1, which generally will
use a DDR2 667MHz up to 6GB (1=2GB + 1=4GB total: 6GB) given two RAM slots.
http://eshop.macsales.com/shop/memory/MacBook/DDR2/ memory + hard drive info
(more: http://eshop.macsales.com/memory/maxram )
crucial web page http://www.crucial.com/ offers two methods they say guarantees
a match for the RAM they stock to work with the computer model build you have.
Use the above as a measure of details in voltage and buffer/non-buffer, among other
specification details, if looking to other sources for these RAM chips. Some appear in
places such as amazon affiliate reseller merchants, or auction sites, or qualified Apple
authorized independent service and sales businesses that may service older Macs.
To speed up an older computer with an SSD may consider Mercury line specs at OWC;
http://eshop.macsales.com/shop/internal_storage/SSD/Mercury_Electra_3G_Solid_Sta te
Good luck & happy computing! 🙂